ii Introductory Message For the facilitator: Welcome to the Science 10 Alternative Delivery Mode (ADM) Module 4 onEarth’s Mechanism! This module was collaboratively designed, developed, and reviewed by educators both from public and private institutions to assist you, the teacher, or facilitator in helping the learners meet the standards set by the K to 12 Curriculum while overcoming their personal, social, and economic constraints in schooling. This learning resource hopes to engage the learners in guided and independent learning activities at their own pace and time. Furthermore, this also aims to help learners acquire the needed 21st-century skills while taking into consideration their needs and circumstances. As a facilitator, you are expected to orient the learners on how to use this module. You also need to keep track of the learners' progress while allowing them to manage their own learning. Furthermore, you are expected to encourage and assist the learners as they do the tasks included in the module. For the learner: Welcome to the Science 10 Alternative Delivery Mode (ADM) Module 4 onVolcanoes, Earthquakes, and Mountain Ranges!